And the honor student being punished for trying to do the right thing. She offered to drive her friend home from a party where there was underaged drinking. She was not but she's being disblined by her school. Linzie janis has the story. Reporter: Erin cox is an honor student and a star player on her high school volleyball team with dreams of playing at college. This morning, she is sitting the bench, after she was stripped of her captainship and suspended for five games in the middle of And it's all because she says she was doing the right thing. Answering a call from a friend who needed a ride home from a party where there was underaged drinking. Erin had just finished work earlier this month, when she went to pick up that friend. She goes to a party because someone there says, can you take me home? I want to go home. She get there's, and literally minutes later, the police show up. Reporter: But erin's school in the boston suburbs has a zero tolerance policy when it comes to parties where drinking was involved. And they punished her, even though her family lawyer says police confirmed erin hadn't been drinking. If a kid asks for help from a friend, you don't want that friend to say, sorry, I can't help you, I might end up in trouble at school. She's fragile. And I'm worried about her. She didn't do anything wrong. Reporter: In a statement to abc news, the family lawyer also said this, quote, by punishing e rain cox, the north andover school district sends a contrary and dangerous message. That young people are better off letting their friends drive drunk. The parents of one of erin's teammates agree. They claim she was arrested and she was not. They made the decision based on nothing coming from erin or her family. I would hate to see this hurt her chances of excelling in college. Reporter: Now, erin's mother and her lawyer are working to get the school to reverse its position. She did what she thought was right. And I'm proud. Reporter: We contacted erin's school and its lawyer. Both declined to comment. The judge ruled the court didn't have jurisdiction. Now, she's considering other legal options against the school. They're saying no good deed goes unpunished. Thank you so much. I wish the school would have said something. We will hear from them. Maybe they will. Talking about they're sorry? Thank you, sam.

This transcript has been automatically generated and may not be 100% accurate.

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